[Minios-devel] [UNIKRAFT/LIBGO PATCH 10/11] Add glue code and stubs

[Charalampos Mainas <Charalampos.Mainas@xxxxxxxxx>]

Signed-off-by: Charalampos Mainas <Charalampos.Mainas@xxxxxxxxx>
---
 Makefile.uk |   2 +
 glue.c      | 199 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 201 insertions(+)
 create mode 100644 glue.c

diff --git a/Makefile.uk b/Makefile.uk
index f209598..714385c 100644
--- a/Makefile.uk
+++ b/Makefile.uk
@@ -86,6 +86,8 @@ LIBGO_CFLAGS-y += -Wno-cast-qual -Wno-unused-value
 # libgo code
 
################################################################################
 
+LIBGO_SRCS-y += $(LIBGO_BASE)/glue.c
+
 LIBGO_SRCS-y += $(LIBGO_EXTRACTED)/go/bytes/indexbyte.c|bytes
 LIBGO_SRCS-y += $(LIBGO_EXTRACTED)/go/log/syslog/syslog_c.c
 LIBGO_SRCS-y += $(LIBGO_EXTRACTED)/go/reflect/makefunc_ffi_c.c
diff --git a/glue.c b/glue.c
new file mode 100644
index 0000000..de4cbcb
--- /dev/null
+++ b/glue.c
@@ -0,0 +1,199 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ *
+ * Authors: Charalampos Mainas <charalampos.mainas@xxxxxxxxx>
+ *
+ *
+ * Copyright (c) 2019, NEC Europe Ltd., NEC Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+
+/*
+ * stubs
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <sys/statfs.h>
+#include <sys/stat.h>
+#include <uk/essentials.h>
+#include <pte_types.h>
+
+int epoll_create(int size __unused)
+{
+       return 0;
+}
+
+int epoll_ctl(int epfd __unused, int op __unused, int fd __unused, struct 
epoll_event *event __unused)
+{
+       return 0;
+}
+
+int epoll_wait(int epfd __unused, struct epoll_event *events __unused, int 
maxevents __unused, int timeout __unused)
+{
+       return 0;
+}
+
+int madvise(void *addr __unused, size_t length __unused, int advice __unused)
+{
+       return 0;
+}
+
+int mincore(void *addr __unused, size_t length __unused, unsigned char *vec 
__unused)
+{
+       return 0;
+}
+
+int prctl(int option __unused, unsigned long arg2 __unused, unsigned long arg3 
__unused, unsigned long arg4 __unused, unsigned long arg5 __unused)
+{
+       return 0;
+}
+
+int pthread_sigmask(int how __unused, const sigset_t *set __unused, sigset_t 
*oldset __unused)
+{
+       return 0;
+}
+
+long ptrace(void)
+{
+       return 0;
+}
+
+int reboot(int magic __unused, int magic2 __unused, int cmd __unused, void 
*arg __unused)
+{
+       return 0;
+}
+
+int sched_getaffinity(void)
+{
+       return 0;
+}
+
+int setitimer(int which __unused, const struct itimerval *new_value __unused, 
struct itimerval *old_value __unused)
+{
+       return 0;
+}
+
+int settimeofday(const struct timeval *tv __unused, const struct timezone *tz 
__unused)
+{
+       return 0;
+}
+
+#undef sigaddset
+int sigaddset(sigset_t *set __unused, int signum __unused)
+{
+       return 0;
+}
+
+int sigaltstack(const stack_t *ss __unused, stack_t *old_ss __unused)
+{
+       return 0;
+}
+
+#undef sigdelset
+int sigdelset(sigset_t *set __unused, int signum __unused)
+{
+       return 0;
+}
+
+#undef sigemptyset
+int sigemptyset(sigset_t *set __unused)
+{
+       return 0;
+}
+
+#undef sigfillset
+int sigfillset(sigset_t *set __unused)
+{
+       return 0;
+}
+
+long syscall(long number __unused, ...)
+{
+       return 0;
+}
+
+ssize_t sendfile64(int out_fd __unused, int in_fd __unused, off_t *offset  
__unused, size_t  count __unused)
+{
+       return 1;
+}
+
+int getgrouplist(const char *user __unused, gid_t group __unused, gid_t 
*groups __unused, int *ngroups __unused)
+{
+       return 0;
+}
+
+int getgrnam_r(const char *name __unused, struct group *grp __unused,
+               char *buf __unused, size_t buflen __unused, struct group 
**result __unused)
+{
+       return 0;
+}
+int getgrgid_r(gid_t gid __unused, struct group *grp __unused,
+               char *buf __unused, size_t buflen __unused, struct group 
**result __unused)
+{
+       return 0;
+}
+
+void uk_syscall_fn___NR_clone(void)
+{
+}
+
+/*
+ * Glue code
+ */
+
+#include <ucontext.h>
+#include <uk/sched.h>
+#include <uk/thread.h>
+#include <uk/asm/limits.h>
+
+#define __errno_location __errno
+
+void makecontext1 (ucontext_t *__ucp, void (*__func) (void), int __argc, ...)
+{
+       struct uk_thread *current = uk_thread_current();
+       *((unsigned long *) __ucp->uc_stack.ss_sp) = (unsigned long) current;
+       makecontext(__ucp, __func, __argc);
+}
+
+void *alloc_stack()
+{
+       struct uk_sched *sched = uk_sched_get_default();
+       void *stack = uk_palloc(sched->allocator, __STACK_SIZE_PAGE_ORDER);
+       if (stack == NULL)
+               printf("error allocating stack\n");
+       return stack;
+}
+
+size_t get_stack_size(void)
+{
+       return __STACK_SIZE;
+}
+
-- 
2.17.1


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